import {crateDecrementAction, createIncrementAction, createIncrementAsyncAction} from '../../redux/actions/count'
import {connect} from 'react-redux'
import React, {Component} from "react";

//定义UI组件
class Count extends Component {

    increment = () => {
        const {value} = this.selectNumber;
        this.props.createIncrementAction(value * 1);
    }

    decrement = () => {
        const {value} = this.selectNumber;
        this.props.crateDecrementAction(value * 1);
    }

    incrementIfOdd = () => {
        const {value} = this.selectNumber;
        if (this.props.count % 2 !== 0) {
            this.props.createIncrementAction(value * 1);
        }
    }

    incrementAsync = () => {
        const {value} = this.selectNumber;
        this.props.createIncrementAsyncAction(value * 1, 500);
    }

    render() {
        return (
            <div>
                <h3>我是Count组件，下方组件总人数为：{this.props.renshu}</h3>
                <h4>当前求和为：{this.props.count}</h4>
                <select ref={c => this.selectNumber = c}>
                    <option value="1">1</option>
                    <option value="2">2</option>
                    <option value="3">3</option>
                    <option value="4">4</option>
                </select>&nbsp;
                <button onClick={this.increment}>+</button>
                &nbsp;
                <button onClick={this.decrement}>-</button>
                &nbsp;
                <button onClick={this.incrementIfOdd}>当为奇数时再加</button>
                &nbsp;
                <button onClick={this.incrementAsync}>异步加</button>
                &nbsp;
            </div>
        );
    }
}

//使用connect()()创建并暴露一个Count的容器组件
export default connect(
    state => ({
        count: state.he,
        renshu: state.rens.length
    }),
    {
        createIncrementAction,
        crateDecrementAction,
        createIncrementAsyncAction,
    }
)(Count);